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Single Family ResidenceResidential
$654,909$310 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 90How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

21 SHAMROCK DR

PUTNAM VALLEY, NY 10579
3
Beds
3 / 1
Baths
2,116 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
1.02 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$655K
$590K low$720K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,921 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$544,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$145,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$398,900
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$544,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$555,612

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.40
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
26
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
62
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
96
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
16
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Raised Ranch
CountyPutnam
Lot (acres)The size of the land the home sits on, from county records.1.02
HeatingThe type of heating system in the home.Electric
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 626 ft²

Transaction History(1)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Austin Road Elementary SchoolB
Elementary · Grades KG–5 · 2.8 mi
H
Mahopac High SchoolB+
High · Grades 7–12 · 2.9 mi
M
Mahopac Middle SchoolA
Middle · Grades 6–10 · 2.9 mi

District: Mahopac Central School District

Neighborhood · ZIP 10579These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.117
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.92

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.8,761
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.256 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$126,687
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$149,473
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.51 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

21 Shamrock Dr measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 65% of homes in Putnam County
  • Has a bigger lot than 68% of homes in Putnam County
  • Newer than 68% of homes in Putnam Valley 10579

What homes are worth in Putnam Valley 10579

Each bar is how many homes fall in that price range. The marker is this home.

This home
$291K$1.2M

This home is worth more than 58% of homes in Putnam Valley 10579.

How it measures up in Putnam Valley 10579

The dot is this home. The mark in the middle is the typical home in Putnam Valley 10579.

Estimated value$654,909
CheaperTypical $619,924Pricier

Pricier than 58% of homes nearby

Price per ft²$310
CheaperTypical $336Pricier

Pricier than 36% of homes nearby

Living area2,116 ft²
SmallerTypical 1,898 ft²Bigger

Bigger than 60% of homes nearby

Lot size1.02 ac
SmallerTypical 1 acBigger

Bigger than 53% of homes nearby

Year built1975
OlderTypical 1964Newer

Newer than 68% of homes nearby

How 21 Shamrock Dr ranks against every home in each area.
MeasureThis homePutnam Valley 10579Putnam County
Estimated valuepricier than$654,90958% of homes65% of homes
Price per ft²pricier than$31036% of homes43% of homes
Living areabigger than2,116 ft²60% of homes64% of homes
Lot sizebigger than1.02 ac53% of homes68% of homes
Year builtnewer than197568% of homes64% of homes

About 21 Shamrock Dr

How much is 21 Shamrock Dr, Putnam Valley, NY worth?

The TopHap Estimate for 21 Shamrock Dr, Putnam Valley, NY is $654,909 as of Sep 24, 2026. The likely range is $589,968 to $719,850. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 21 Shamrock Dr, Putnam Valley, NY?

21 Shamrock Dr, Putnam Valley, NY has 3 bedrooms, 3 bathrooms, 2,116 square feet of living space and a 1.02-acre lot.

When was 21 Shamrock Dr, Putnam Valley, NY built?

21 Shamrock Dr, Putnam Valley, NY was built in 1975, making it 51 years old. It is a raised ranch home. The building has 1 story.

What schools serve 21 Shamrock Dr, Putnam Valley, NY?

21 Shamrock Dr, Putnam Valley, NY is assigned to Austin Road Elementary School (elementary), rated B; Mahopac High School (high), rated B+; Mahopac Middle School (middle), rated A. All sit in Mahopac Central School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Shamrock Dr, Putnam Valley, NY compare to other homes in Putnam Valley 10579?

Among the 3,638 homes in Putnam Valley 10579, it is worth more than 58% of them ($654,909 against a typical $619,924), its price per square foot is higher than 36% of them ($310 against a typical $336), it is bigger than 60% of them (2,116 ft² against a typical 1,898 ft²), its lot is bigger than 53% of them (1.02 ac against a typical 1 ac) and it is newer than 68% of them (1975 against a typical 1964). Measured against all of Putnam County, it is worth more than 65% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 21 Shamrock Dr, Putnam Valley, NY?

The 2025 property tax bill for 21 Shamrock Dr, Putnam Valley, NY was $12,921. The county assessed it at $544,500.

More homes on Shamrock Dr

Closest homes

More homes in Putnam Valley 10579

Assigned schools

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